B&K Precision 2516 - Manual - Manual (Page 156)

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11 Maintenance
Do not expose the LCD display to direct sunlight for long periods of time.
To avoid damage to the instrument or probes, do not expose them to
sprays, liquids, or solvents.
Cleaning
If the instrument requires cleaning, disconnect it from all power sources
and clean only with a mild detergent and water. Be sure the instrument is
completely dry before reconnecting it to any power source.
To clean the exterior surface:
1.
Remove loose dust on the outside of the instrument and probes
with a lint-free cloth.
2.
Use a soft cloth dampened with water to clean the instrument.
Note: To avoid damaging the surface of the instrument and probes, do
not use any chemically abrasive cleaning agents.